Open AccessCdZnTe- and TlBr-detectors response simulation for registration of the mixed beta- and gamma-radiation
Author(s) -
Anna I. Skrypnyk
Publication year - 2015
Publication title -
tehnologiâ i konstruirovanie v èlektronnoj apparature
Language(s) - English
Resource type - Journals
eISSN - 2309-9992
pISSN - 2225-5818
DOI - 10.15222/tkea2015.1.17
Subject(s) - detector , deconvolution , semiconductor detector , monte carlo method , radiation , physics , gamma ray , particle detector , beta particle , electron , spectral line , filter (signal processing) , materials science , optics , computational physics , nuclear physics , computer science , mathematics , statistics , astronomy , computer vision
One of the approaches for reconstructing the spectra of the mixed beta- and gamma-radiation, produced by wide band-gap semiconductor detectors, and the subsequent identification of radionuclides that are comprised in the mixture composition is a method based on various methods of spectral deconvolution. The presence of the detector response functions for each individual source of radiation is a key point in the studying such techniques. The response of TlBr- and CdZnTe-detectors to gamma-rays from 90Sr and 137Cs was simulated by Monte-Carlo method via Geant4 package. The computer experiments were conducted with using a -filter and without it. It was shown that optimal thickness of the Al -filter required for complete suppressing the conversion electrons in the 137Cs spectrum is 0.5 mm. The modification of 661.7 keV photopeaks with a using -filter was investigated.